Vertical steam-pump



(No Model.)

0. H. ROBINSON.

VERTICAL STEAM PUMP.

No. 454,498. Patented June 23, 1891.

6. 6. 54: 0am. a ijfowaw UNTTED STATES PATENT OFFICE.

CHARL 15 H. ROBINSON, OF HUNTSVILLE, TEXAS.

VERTICAL STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 454,498, dated June 23,1891.

Application filed April 19, 1890.

To all whom it may concern:

Be it known that 1, CHARLES H. ROBINSON, of Huntsville, alker county,State of Texas, have invented certain new and useful Improvements inSteam-Pumps, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention relates to steam-pumps which are adapted to compress aliquefiable gassuch as that of ammonia-to a state of partialliquefaction, the pressure being subsequently removed and the liquefiedrefrigerating agent expanding through tubes and chambers, and thecooling effect produced by the volatile liquid again assuming itsgaseous state is utilized for the absorption of heat.

The invention consists in the novel construction, combination, andarrangement of parts, hereinafter set forth, and pointed out in theannexed claim.

In the drawings, Figure 1 is a vertical sectional elevation with partsbroken away of a pump embodying my invention, and Fig. 2 is a detailview in perspective of a removable spider or valve-cage made use of.Fig. 3 is a horizontal section on line as o: of Fig. 1.

The pump-cylindcr I has the induction-pas sage F and theeduct-ion-passage Gformed in the walls thereof, the former passage beingof the shape of a crescent, the latter being square and separated fromthe former by the vertical walls on, and it will thus be seen that theportion of the cylinder marked 2 will act as a jacket thereof. I alsoprovide a tank or jacket H, encircling said jacket 2, with its upper endopen, and water-circulating space 1, located between said third andouter jacket and said jacket 2, which latter may be termed theintermediate jacket.

3 is supports leading to the motor or steam cylinder, and upon whichsupports the cylinder I is mounted. Between the cylinder and thesupports 3 is located a diaphragm at, which forms the lower head of saidcylinder, its upper side being plain. and its opposite side beingprovided With a dependent stuffing-box, upon which a cap 5 is screwed.

The piston-rod 6 has upon its upper end the piston 7, the body of whichis solid or imperforate, being entirely devoid of valves and Serial No.348,680. (No model) valve-seats, and the edge of which is provided withthe usual packing-rings.

Through the walls of the cylinder I is formed an annular series ofelongated openings or ports 8, which are uncovered at each downwardstroke of the piston, permitting the fluid to rush into the vacuumformed above the same.

10 represents two or more vertical stay-rods secured to the top ofcylinder, to which rods is screwed a horizontal support 9, held in placeby nuts.

12 is a clamping-bolt threaded through the support 9 and bearing againsta cap 11 for holding same in a secure position upon top of cylinder.Vithin the cap 11 is placed a coiled spring 13, which bears upon andoperates a valve H.

19 represents a removable spider or valveeage provided with a valve-seatat its lower end and having side openings 20 and a flange 2'. Thisspider is clamped removably between the cylinder and the disk m, whichlatter is also removable and acts as a guide to the stem of the valve1*, a seat or recess a being formed in the upper cylinder-head forreception of said spider and said disk.

Attached to the discharge-pipe 18, leading from the cylinder,is acheek-valve casing 16, and within this casing is a spring-pressed valve17, which will prevent loss of fluid if the cylinder should be broken byaecidentor any of its parts, which is not liable to occur, as no valveis used in the piston. 15 isa pipe leading from the check-valve 16 towherever the fluid is desired to be utilized. It will thus be observedthat the cylinder is provided with a series of ports opening intoinduction-passage F, and that said passage is encircled or inclosed bythe walls of the central jacket 2, and this in turn is inclosed by anopen-ended passage 1, and, lastly, that this passage is inclosed by thewalls of the exterior jacket H, and that the piston is imperforate andentirely devoid of valves and valve-seats, leaving no room for suchvalves to become disconnected and fall down between the piston and lowerhead. of cylinder and cause a break down of the entire pump. The fluidfirst enters passageF through induction-pipe 21, and thence to thecylinder by way of the series of ports 8 and out past valve 14: intopassage G and to the check-valve. By this construction of cylinder,ports, and jackets, and induction and eduction passages, and using asolid piston I am enabled to dispense with the use of any sort of valvewhatever in the piston.

What I claim is- In a pump, the cylinder having the outer and the innerwalls 1 and 2, with the water chamber between, as F, extending from endto end and communicating with an inductionpipe at its bottom, and ports,as 8, communicating with the central bore, and with the eductionpassage, as G, also between said Walls and separated from the chamber Fby partitions, as as", communicating with an educ- CHARLES H. ROBINSON.

Witnesses: G. A. WYNNE,

W. S. GIBBS.

